CMake: generate and install the tinycbor.pc pkgconfig file

Signed-off-by: Thiago Macieira <thiago.macieira@intel.com>

CMakeLists.txt

@@ -125,6 +125,9 @@ generate_export_header(tinycbor
 # Generate version header
 configure_file(src/tinycbor-version.h.in tinycbor-version.h)
 
+# Generate pkgconfig file
+configure_file(tinycbor.pc.in tinycbor.pc @ONLY)
+
 # Check for open_memstream and store the result in HAVE_OPEN_MEMSTREAM
 check_symbol_exists(open_memstream stdio.h HAVE_OPEN_MEMSTREAM)
 check_symbol_exists(funopen stdio.h HAVE_OPEN_FUNOPEN)
@@ -157,6 +160,10 @@ install(FILES
   ${PROJECT_BINARY_DIR}/tinycbor-export.h
   DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/tinycbor
 )
+install(FILES
+  ${CMAKE_BINARY_DIR}/tinycbor.pc
+  DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig
+)
 install(
   TARGETS tinycbor
   EXPORT "${TARGETS_EXPORT_NAME}"

tinycbor.pc.in

@@ -1,11 +1,11 @@
-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-includedir=@includedir@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=@CMAKE_INSTALL_PREFIX@
+libdir=@CMAKE_INSTALL_LIBDIR@
+includedir=@CMAKE_INSTALL_INCLUDEDIR@
 
 Name: TinyCBOR
 Description: A tiny CBOR encoder and decoder library
-Version: @version@
+Version: @PROJECT_VERSION@
 Libs: -L${libdir} -ltinycbor
 Libs.private: -lm
 Cflags: -I${includedir}/tinycbor